Kanye joins 2 Chainz for the super sexy/weird music video for ‘Birthday Song’ — do YOU think he’s obsessed with Kim’s posterior? He certainly seems to enjoy the company of these hot look-alikes!

Kanye, 35, is seen in the video partying with a bunch of sexy, curvy models (many of whom look like Kim, 31). He even rides around on a bike with an ass-shaped cake on it. It’s almost as if he’s using the models and cake to pay tribute to his lady — he’s got butt on the brain!

Kanye’s labelmate and BFF, Big Sean, recently spoke to Complex about preparing the upcoming record, Cruel Summer, on which he raps alongside Kanye and the G.O.O.D. Music roster.

“I just feel like we’re the best. I’ve heard a lot of the collaborations. I’ve heard what people have been doing. Of course you’re going to listen to it and try to make your music the best, so that’s what we’ve been doing—making our music the best it can be. The best quality, the best raps, the best concepts, and it’s going to be unique. As a crew, G.O.O.D. Music is taking it to levels that really haven’t been done collectively. Kanye is someone who knows how to make classic albums, a true thinker. He got me in the mindset of being a true thinker and always planning out every move you got going.”

Do YOU think Kanye is obsessed with Kim Kardashian’s butt, HollywoodLifers?